pc133 in a Asus P2B run a copermine EB????

[mikable]

Courious, if I install pc133 in my Asus P2B can i run a 133MHz CPU?

 

[DeeK]

No. THe 440BX chipset on your motherboard only supports a 100MHz system bus.

 

[mikable]

Yes officialy... however there is a 133 setting. so I would like to know if anyone has plugged a 133 P3 in a P2B set for 133 and if it worked.


M

 

[Budman]

It could Unofficialy work,but can your agp card handle 89mhz bus speed?

And what about all your pci devices? can they handle beeeing overclocked too?

There are a lot of things to consider.

 

[bacillus]

<< And what about all your pci devices? can they handle beeeing overclocked too? >>


with a p2b , the pci bus is 33MHz when the fsb is 133MHz because the board has a 1/4 divider at that speed!
to run at 133fsb your videocard must be able to tolerate 89MHz &amp; your ram has to be good quality preferably PC133!

 

[mikable]

Oh the AGP slot dosen't work off the pci divider too? didn't know that. Ok it's a SB GF2 mx with Nvidia drivers.

1. Would that card handle it?



2. How 'bout if I &quot;underclock&quot; the mem/core on the graphics card?

 

[Budman]

Are you sure the P2B as a 1/4 devider?

BX chipsets didnt have that right?

 

[LXi]

BX has 1/4 PCI divider, but not 1/2 AGP divider, which is absolutely needed for 133MHz operation. Its not recommended to run your BX at 133MHz, most video cards wont take the overclocked bus.

 

[j@cko]

if you have your P2B running at 133, then your AGP will be 89mhz as some one mentioned above!

 

[mikable]

I know it does 1/4 at 133. i didn't know the AGP slot didn't get slowed down also!

 

[Diesel21]

If you want to run your BX board at 133 mhz you will need:

1. Have ram capabable of running 133 mhz
2. Have a Grapich Adapter that will work @ 89 mhz agp (most nvidia cards to this)

 

[Budman]

Why not get a 100mhz cpu &amp; OC the hell out of it?

 

[mikable]

Got a p3 500 now. it doesn't go past 112MHz. get random reboots, lockups and such. I'm running 256K of Muskin pc133 rev2 so i know it's not them mem...

 

[Budman]

Your P3 500 is not a coppermine cpu. getting a 600E would allow for some nice OC.

 

[BadSeed]

Just to let you know, I have a P3 600e, and it runs fine at 800mhz (133mhz fsb) on my ASUS P2B. I've never had any trouble with my Geforce DDR due to the overclocked agp port. Basically, if the graphics card can handle the 89mhz agp port, then you should be fine, and as previously stated, geforce whatever's normally work fine on the faster agp speed.

 

[j@cko]

ya, your 500 must be the older core, get a E and overclock it, it give you better result!

 

[mikable]

Well yea, I was looking at getting a 133 EB cpu 800 or so MHz. then when I get another MB I can keep the CPU and memory.

 

[LXi]

Why do you absolutely need 133MHz anyway? Just get a 800E or something and you'll have the same clock speed with no instability problems on a BX.

 

[jeremy806]

My advice, if you want to stay with the P2B,

get a Celeron 533A and OC to 800.

Or, buy a P3 700/100, 750/100, or 800/100 and live with it.

jeremy806

FYI: I tried 133 FSB on my P2B, but no POST from the Celeron.

 

[oldfart]

CAREFUL! Not all BX boards have a 1/4 PCI. The early ones like the ABIT BX6 and BH6 did not. The rev 2 of those boards did. I'm not sure on the ASUS P2B. The P3B-F did have the 1/4 PCI. 133 with a 1/3 PCI bus of 44 MHz will not fly. Better check first.

 

[mikable]

I guess I wantesd to see how stable it would run. And if it didn't I could lower it a bit. Another reason was to reduce cost later, ie. get the EB cpu now and keep it for my next Mobo. I can't see getting a P4 system so it would be a 815 chip mobo or so. Please, no intel/amd comparisions :>

 

[AndyHui]

ALL revisions of the entire ASUS P2B family have the 1/4 PCI divider at 133MHz FSB. At 133MHz FSB, the PCI bus will run at 33MHz.

There are no problems using PC133 SDRAM with the P2B.

There is no AGP 1/2 divider, so at 133MHz FSB, AGP speed will be 89MHz.

Underclocking the memory and the graphic processor will not help if your video card cannot handle it. Most of the latest video cards, ie nVidia GeForces, can handle the higher AGP speed. Ensure that sidebanding is switched OFF to prevent problems. There are many video cards that will only run at 89MHz AGP with sidebanding off.

You must make sure that you have the latest BIOS, which includes support for Coppermine CPUs. Version 1012 Final is available here while version 1013 Beta 007 is available here.

The only thing that you should really be worried about is voltage support. PCB revs of the P2B prior to 1.12 DO NOT have voltage support for Coppermines. If you have a PCB rev earlier than 1.12, you can make a Coppermine work by using an FC-PGA processor, slotket and manually setting the voltage. While the P2B may not go down as low as 1.65 volts (or 1.70 volts for cC0 processors), all PCB revs will go down at least as far as 1.80 volts. Set the slotket voltage to 1.80 volts and you should be fine, as well as get a good boost for overclocking.

Good luck.

 

[jeremy806]

Well, I recommend getting a P3 700/100.

If you want to OC, maybe it will run at 933 for you.

As for adapters, I use an IWill Slocket 2 and set the jumpers to 1.8 volts (the lowest that the P2B will go). Other people probably would recommend the MSI slocket, but to each their own slocket, I guess.

I recommend just running at 100 FSB, but a friend of mine had no problem getting his 700 to 933 (not a P2b though).

Anyway, good luck to you in your efforts,

jeremy806

 

[oldfart]

Gee AndyHui, cant you come up with any information to help the guy out?

 

[rommel]

get a plll 700e....thats the 1oomhz one....that seems to be the best one to overclock for some reason....mine is running at 933mhz no problem....can go higher but i dont like jackin up the core voltage adn the herz to the pci and agp.